fsl_ls1021a-iot-sdboot-uEnv.txt

fdtaddr=0x8f000000
loadaddr=0x81000000
fdt_high=0xffffffff
initrd_high=0xffffffff
sd_boot=mmc read ${fdtaddr} 7800 800;mmc read ${loadaddr} 8000 8000;bootm ${loadaddr} - ${fdtaddr}
bootargs=root=/dev/mmcblk0p1 rw rootwait rootfstype=ext4 noinitrd earlycon=uart8250,mmio,0x21c0500 console=ttyS0,115200
bootcmd=echo starting openwrt ...;run sd_boot
bootdelay=3